Some sources list this as VA. Used like AR, but only for your very last transmission

TNX NICE CHAT 73 CUL GE SK KB3BFQ DE K3WWP K

BK

An invitation for the other station to break in immediately with an answer or comment. The other station may answer immediately after the BK is sent - do not say BK KB3BFQ DE K3WWP K just BK, then KB3BFQ will answer your question or comment.

Go ahead. Used to tell the station you are working you expect him to transmit now. Use after a CQ to invite someone to answer you. Do not use K after you answer someone's CQ since you don't know he is going to answer you, use AR.

HW? AR KB3BFQ DE K3WWP K

KN

Go ahead, specific station only. No breakers are currently welcome. Used same as K when you only want to talk to one other station. Never use after a CQ unless you are not wanting anyone to answer you.

HW? AR KB3BFQ DE K3WWP KN

CL

I am now shutting down my station completely. Use when you are completely done transmitting, and about to pull the big switch. This is a signal that you are not listening to any more calls.